CS451/CS456 Submersible Pressure Transducer
18
TABLE 8-3. CS451/CS456 SDI-12 Commands
a
M6!
or
a
C6!
1.
ΔR
2. Rb
3. Temperature
4. IN – DAC counts
single-ended
measurement, IN+
DAC counts single-
ended measurement
5. OUT DAC counts
differential
measurement
Ohms
Ohms
°C
a
M7!
or
a
C7!
1. Pressure/Level
2.
Temperature
Configured Settings (provides
data in less than 0.8 s)
a
M8!
or
a
C8!
1. Pressure/Level
2.
Temperature
Configured Settings.
Provides average of data
based on user selected
samples. Number of samples
are entered with the
a
XCONFIG2=
nnn
!
command
.
a
MC!,
a
MC
n
! ,
a
CC!
or
a
CC
n
!
Where n =1 through 8
Same values returned as
a
M!
,
a
M1!
–
a
M8!,
a
C!,
a
C1! –
a
C8!
commands
,
except a
checksum is
added
Same units as the
a
M!
,
a
M1!
–
a
M8!,
a
C!,
a
C1! –
a
C8!
commands
a
XCONFIG=
tt,pp,mmm.mm,ooo.oo
!
Where,
tt
= temperature units
pp
= measurement unit
mmm.mm
= multiplier (slope)
ooo.oo
= offset
Configures the output
units for the
a
M!
and
a
C!
commands.
Valid entries for
tt
are:
0 = Celsius
1 = Fahrenheit
Valid entries for
pp
are:
0 = psig
1 = kPa
2 = Bar
3 = feet
4 = met
re
5 = inch
6 = millimet
re
The offset and multiplier
are only applied to the
pressure/level value, not to
the temperature.